Liquid crystal display panel and manufacturing method thereof

ABSTRACT

A liquid crystal display panel and a manufacturing method thereof are provided, in which transparent traces are prepared on a first substrate to replace metal traces originally under a sealant, so that ultraviolet light is irradiated on the sealant from a side of the transparent traces in a process of curing the sealant, which can effectively improve a curing rate of the sealant. Moreover, transparent conductive polymer has better corrosion resistance than metal, which can effectively prevent circuit corrosion caused by the sealant absorbing water.

RELATED APPLICATIONS

This application is a National Phase of PCT Patent Application No.PCT/CN2020/076999 having International filing date of Feb. 27, 2020,which claims the benefit of priority of Chinese Patent Application No.202010000602.2 filed on Jan. 2, 2020. The contents of the aboveapplications are all incorporated by reference as if fully set forthherein in their entirety.

FIELD AND BACKGROUND OF THE INVENTION

The present application relates to the field of display technologies,and in particular, to a liquid crystal display panel and a manufacturingmethod thereof.

Liquid crystal displays (LCDs) have low cost, high resolution, highcontrast, and fast response times. They are one of the most importantdisplays on the market today.

At present, materials in a liquid crystal cell of the liquid crystaldisplays mainly include sealant, polyimide (PI), liquid crystals, andother materials, and the sealant is positioned on metal traces around apanel. However, in a curing process of the sealant, the metal tracesunder the sealant will block ultraviolet light and reduce a curing rateof the sealant, which will reduce yield of the LCD panels.

SUMMARY OF THE INVENTION Technical Problem

The present application provides a liquid crystal display panel and amanufacturing method thereof to solve the problem that a curing rate ofa sealant is reduced due to underlying metal traces blocking ultravioletlight in a curing process of the conventional art sealant.

Technical Solutions

To solve the above problems, the technical solutions provided in thepresent application are as follows.

A liquid crystal display panel, including:

a first substrate, a second substrate, a liquid crystal layer, and asealant; and

the liquid crystal display panel further including a display region anda non-display region surrounding the display region;

wherein the first substrate and the second substrate are bonded by thesealant surrounding the display region, and the liquid crystal layer isdisposed in a range limited by the sealant;

wherein the first substrate includes a plurality of signal linescorresponding to the display region and a plurality of transparenttraces corresponding to the non-display region, and the transparenttraces include a transparent conductive polymer material;

wherein the sealant is disposed on the transparent traces; and

wherein a signal is transmitted between a circuit board and the signallines through the transparent traces.

In the liquid crystal display panel of the present application, thetransparent conductive polymer material includes at least one ofpolypyrrole, polyphenylene sulfide, polypeptidylcyanine, or polyaniline.

In the liquid crystal display panel of the present application, materialfor preparing the transparent traces further includes an organicsolvent, and the organic solvent includes dimethylformamide and/ordimethylsulfoxide.

In the liquid crystal display panel of the present application, athickness of each of the transparent traces ranges from 0.2 um to 0.4um.

In the liquid crystal display panel of the present application, a partof the transparent traces is sandwiched between the sealant and thefirst substrate, and the other part of transparent traces is positionedbetween the display region and a region of the sealant corresponding tothe first substrate.

In the liquid crystal display panel of the present application, thefirst substrate corresponding to the non-display region further includesat least one metal trace, and the at least one metal trace is disposedon a same layer as the transparent traces, wherein the signal istransmitted between the circuit board and the signal lines through thetransparent traces and the at least one metal trace.

In the liquid crystal display panel of the present application, aprojection of the transparent traces on the first substrate ispositioned within a projection of the sealant on the first substrate,and a projection of the at least one metal trace on the first substrateis positioned outside the projection of the sealant on the firstsubstrate and is close to a side of the display region.

In the liquid crystal display panel of the present application, thetransparent traces and the at least one metal trace are arranged atequal intervals.

A method of manufacturing a liquid crystal display panel, including:

step S10, preparing a plurality of transparent traces in a non-displayregion of a first substrate, and the transparent traces including atransparent conductive polymer material;

step S20, preparing a sealant material layer in the non-display regionof the first substrate, and disposing the sealant material layer on thetransparent traces;

step S30, aligning a second substrate with the first substrate, andinjecting liquid crystals between the first substrate and the secondsubstrate using a liquid crystal injection process;

step S40, bonding the first substrate and the second substrate throughthe sealant material layer; and

step S50, irradiating the sealant material layer by ultraviolet lightfrom a side of the first substrate away from the second substrate tocure the sealant material layer to obtain a sealant.

In the method of manufacturing the liquid crystal display panel of thepresent application, the method of preparing the transparent tracesincludes dissolving a transparent conductive polymer material in anorganic solvent to form a transparent trace material, preparing thetransparent trace material on the first substrate corresponding to thenon-display region, placing the first substrate in a baking furnace, anddrying the transparent trace material.

In the method of manufacturing the liquid crystal display panel of thepresent application, the organic solvent includes dimethylformamideand/or dimethylsulfoxide.

In the method of manufacturing the liquid crystal display panel of thepresent application, a thickness of the transparent trace materialprepared on the first substrate ranges from 0.4 um to 0.6 um.

In the method of manufacturing the liquid crystal display panel of thepresent application, temperature in the baking of the first substrateranges from 100° C. to 120° C., and baking time ranges from 30 min to 40min.

A liquid crystal display panel, including:

a first substrate, a second substrate, a liquid crystal layer, and asealant; and

the liquid crystal display panel further including a display region anda non-display region surrounding the display region;

wherein the first substrate and the second substrate are bonded by thesealant surrounding the display region, and the liquid crystal layer isdisposed in a range limited by the sealant;

wherein the first substrate includes a plurality of signal linescorresponding to the display region and a plurality of transparenttraces corresponding to the non-display region, and the transparenttraces include a transparent conductive polymer material;

wherein the sealant is disposed on the transparent traces;

wherein the transparent conductive polymer material includes at leastone of polypyrrole, polyphenylene sulfide, polypeptidylcyanine, orpolyaniline; and

wherein a signal is transmitted between a circuit board and the signallines through the transparent traces.

In the liquid crystal display panel of the present application, materialof preparing the transparent traces further includes an organic solvent,and the organic solvent includes dimethylformamide and/ordimethylsulfoxide.

In the liquid crystal display panel of the present application, athickness of each of the transparent traces ranges from 0.2 um to 0.4um.

In the liquid crystal display panel of the present application, a partof the transparent traces is sandwiched between the sealant and thefirst substrate, and the other part of transparent traces is positionedbetween the display region and a region of the sealant corresponding tothe first substrate.

In the liquid crystal display panel of the present application, thefirst substrate corresponding to the non-display region further includesat least one metal trace, and the at least one metal trace is disposedon a same layer as the transparent traces, wherein the signal istransmitted between the circuit board and the signal lines through thetransparent traces and the at least one metal trace.

In the liquid crystal display panel of the present application, aprojection of the transparent traces on the first substrate ispositioned within a projection of the sealant on the first substrate,and a projection of the at least one metal trace on the first substrateis positioned outside the projection of the sealant on the firstsubstrate and is close to a side of the display region.

In the liquid crystal display panel of the present application, thetransparent traces and the at least one metal trace are arranged atequal intervals.

Beneficial Effect

In the present application, transparent traces are used to replace themetal traces originally under the sealant, and material of thetransparent traces includes transparent conductive polymer. Since thetransparent conductive polymer has advantages of high strength, highmodulus, corrosion resistance, low water absorption, and the like, whenthe sealant is cured, ultraviolet light is irradiated on the sealantfrom a side of the transparent traces, which can effectively improve thecuring rate of the sealant. Moreover, the conductive polymer has bettercorrosion resistance than metal, which can effectively prevent circuitcorrosion caused by the sealant absorbing water. At the same time, thetransparent material can be formed into a film by spraying, printing,spin coating, etc., which can effectively save the process steps.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a first liquid crystaldisplay panel according to an embodiment of the present application.

FIG. 2 is a top plane view of a first substrate of the first liquidcrystal display panel according to an embodiment of the presentapplication.

FIG. 3 is a schematic structural diagram of a second liquid crystaldisplay panel according to an embodiment of the present application.

FIG. 4 is a schematic structural diagram of a third liquid crystaldisplay panel according to an embodiment of the present application.

FIG. 5 is a top plane view of a sealant of a liquid crystal displaypanel according to an embodiment of the present application.

FIG. 6 is a top plane view of a first substrate of the second liquidcrystal display panel according to an embodiment of the presentapplication.

FIG. 7 is a schematic structural diagram of a liquid crystal displaypanel according to an embodiment of the present application.

FIG. 8 is a flowchart of a method of manufacturing a liquid crystaldisplay panel according to an embodiment of the present application.

DESCRIPTION OF SPECIFIC EMBODIMENTS OF THE INVENTION

The present application provides a liquid crystal display panel and amethod of manufacturing the same. In order to make the purpose,technical solution, and effect of the present application clearer andmore specific, the present application will be described in detail belowwith reference to the accompanying drawings and embodiments. It shouldbe understood that the specific embodiments described herein are onlyused to explain the application, and are not used to limit theapplication.

Please refer to FIG. 1, which is a schematic structural diagram of afirst liquid crystal display panel according to an embodiment of thepresent application.

In the present application, the liquid crystal display panel includes adisplay region 1000 and a non-display region 2000 surrounding thedisplay region 1000.

The liquid crystal display panel includes a first substrate 100 and asecond substrate 200 opposite to each other, a liquid crystal layer 300,and a sealant 400.

The first substrate 100 and the second substrate 200 are bonded by thesealant 400 surrounding the display region 1000. The liquid crystallayer 300 is disposed in a range limited by the sealant 400.

The first substrate 100 includes a plurality of transparent traces 500corresponding to the non-display region 2000, and a material of thetransparent traces 500 includes a transparent conductive polymermaterial.

The transparent conductive polymer material includes, but is not limitedto, polypyrrole, polyphenylene sulfide, polypeptidylcyanine, andpolyaniline.

The transparent conductive polymer is a type of polymer material that ischemically or electrochemically “doped” by a polymer having a conjugatedπ bond, so that it is transformed from an insulator to a conductor. Theroom-temperature conductivity of the transparent conductive polymer canbe changed within a range of the semiconductor metal state of theinsulator, and the transparent conductive polymer has the advantages ofhigh polymer strength, high modulus, corrosion resistance, low waterabsorption, and the like.

In the present application, the sealant 400 is disposed on thetransparent traces 500.

A thickness of the transparent traces 500 ranges from 0.2 um to 0.4 um.

Furthermore, the thickness of the transparent traces 500 is 0.3 um.

Please refer to FIG. 2, which is a first plane view of the firstsubstrate of the liquid crystal display panel of the presentapplication.

In the present application, the first substrate 100 includes a pluralityof signal lines 101 corresponding to the display region 1000 and thetransparent traces 500 corresponding to the non-display region 2000.

The signal lines 101 extend from the display region 1000 to a side ofthe non-display region 2000, and are electrically connected to thetransparent traces 500.

In the present application, a projection of a part of the transparenttraces 500 on the first substrate 100 is in contact with a projection ofthe signal lines 101 on the first substrate 100, but does not overlap.

A signal is transmitted between a circuit board and the signal lines 101through the transparent traces 500.

Please refer to FIG. 3, which is a schematic structural diagram of asecond liquid crystal display panel of the present application.

The structure of the liquid crystal display panel is similar/same asthat of the liquid crystal display panel in the above application. Fordetails, please refer to the description of the liquid crystal displaypanel in the above application, which will not be repeated here. Thedifferences between the two are described as follows.

In the present application, a part of the transparent traces 500 issandwiched between the sealant 400 and the first substrate 100, and theother part of transparent traces 500 is positioned between the displayregion 1000 and a region of the sealant 400 corresponding to the firstsubstrate 100.

In the present application, there is a certain distance between thesealant 400 and the display region 1000, which is beneficial to preventthe sealant 400 from causing pollution to the liquid crystal layer 300and the problem of uneven brightness in a region around the liquidcrystal display panel.

Please refer to FIG. 4, which is a schematic structural diagram of athird liquid crystal display panel of the present application.

The structure of the liquid crystal display panel is similar/same asthat of the liquid crystal display panel in the above application. Fordetails, please refer to the description of the liquid crystal displaypanel in the above application, which will not be repeated here. Thedifferences between the two are described as follows.

The first substrate 100 corresponding to the non-display region 2000further includes at least one metal trace 102. The metal trace 102 isdisposed on a same layer as the transparent traces 500.

Please refer to FIG. 5, which is a top plane view of the sealant of theliquid crystal display panel of the present application.

In the present application, a projection of the transparent traces 500on the first substrate 100 is within a projection of the sealant 400 onthe first substrate 100, and a projection of the metal trace 102 on thefirst substrate 100 is positioned outside the projection of the sealant400 on the first substrate 100 and is close to a side of the displayregion 1000.

In the present application, the transparent traces 500 and the metaltrace 102 are arranged at equal intervals.

In the present application, the metal trace 102 is not in contact withthe sealant 400, so the sealant 400 is not affected by the metal trace102 in a curing process.

Please refer to FIG. 6, which is a second plane view of the firstsubstrate of the liquid crystal display panel of the presentapplication.

The top plane view on the first substrate of the liquid crystal displaypanel is similar/same as the top plane view on the first substrate ofthe liquid crystal display panel in the above application. For details,refer to the description of the top plane view of the first substrate ofthe liquid crystal display panel in the above application, which willnot be repeated here. The differences between the two are described asfollows.

The first substrate 100 includes signal lines 101 corresponding to thedisplay region 1000, and transparent traces 500 and the metal trace 102corresponding to the non-display region 2000.

The transparent traces 500 and the metal trace 102 are arranged at equalintervals.

In the present application, the signal is transmitted between thecircuit board and the signal lines 101 through the transparent traces500 and the metal trace.

In the present application, the transparent traces 500 are prepared onthe first substrate 100 to replace the metal trace 102 originally underthe sealant 400, so that ultraviolet light is incident into the sealant400 from a side of the transparent traces 500 in the curing process ofthe sealant 400, which can effectively improve a curing rate of thesealant 400. In addition, the transparent conductive polymer has bettercorrosion resistance than metal, which can effectively prevent circuitcorrosion caused by the sealant 400 after absorbing water.

The technical solution of the present application is described incombination with specific embodiments.

Please refer to FIG. 7, which is a schematic structural diagram of theliquid crystal display panel according to an embodiment of the presentapplication.

In the present embodiment, the first substrate 100 is an arraysubstrate.

The first substrate 100 includes a first base 101, and a thin filmtransistor layer 102, a planarization layer 103, a pixel definitionlayer 104, and a first alignment film 105, which are sequentiallydisposed on a side of the first base 101 facing the second substrate.

The first substrate 100 further includes the transparent traces 500corresponding to the non-display region 2000.

In the present embodiment, the second substrate 200 is a color filtersubstrate.

The second substrate 200 includes a second base 201, and a colorresistance layer 202 and a second alignment film 203 disposed on a sideof the second base 201 facing the first substrate 100.

In the present embodiment, the array substrate and the color filtersubstrate are bonded by the sealant 400 surrounding the display region,and the liquid crystal layer 300 is disposed in a range limited by thesealant 400.

Among them, the part of the transparent traces 500 is sandwiched betweenthe sealant 400 and the first substrate 100, and the other part oftransparent traces 500 is positioned between the display region 1000 andthe region of the sealant 400 corresponding to the first substrate 100.

There is a certain distance between the sealant 400 and the displayregion 1000.

The material of the transparent traces 500 includes a transparentconductive polymer material.

In the present embodiment, the transparent conductive polymer materialincludes, but is not limited to, polypyrrole, polyphenylene sulfide,polypeptidylcyanine, and polyaniline.

In the present embodiment, a material for preparing the transparenttraces further includes an organic solvent, and the organic solventincludes dimethylformamide and/or dimethylsulfoxide.

In the present embodiment, color of the color resistance layer 202 canbe one of red, green, or blue, and color of the color resistance layer202 is not limited.

In the present embodiment, the transparent traces 500 are prepared byadding the transparent conductive polymer material to the organicsolvent.

In the present embodiment, the transparent traces 500 are prepared onthe side of the first substrate 100 facing the second substrate 200 toreplace the metal trace originally positioned under the sealant 400.Since material of the transparent traces 500 includes transparentconductive polymer, and the transparent conductive polymer hasadvantages of high strength, high modulus, corrosion resistance, lowwater absorption, and the like, therefore the transparent traces 500have better corrosion resistance than the metal trace, which caneffectively prevent circuit corrosion caused by the sealant 400absorbing water. Furthermore, when the metal trace 102 is positionedunder the sealant 400, the metal trace 102 will block ultraviolet lightin the curing process of the sealant 400, so that the curing rate of thesealant 400 is reduced.

As the transparent traces 500 have good light transmittance, replacingthe metal trace 102 with the transparent traces 500 can effectivelyimprove the curing rate of the sealant 400, reduce illuminance ofultraviolet rays, save resources, and improve yield of the liquidcrystal display panel.

In addition, there is a certain distance between the sealant 400 and thedisplay region 1000, which is beneficial to prevent the sealant 400 fromcausing pollution to the liquid crystal layer 300 and the problem ofuneven brightness in a region around the liquid crystal display panel.

Referring to FIG. 8, the present application also provides a method ofmanufacturing a liquid crystal display panel, including the followingsteps.

Step S10, preparing a plurality of transparent traces 500 in anon-display region 1000 of a first substrate 100. The transparent traces500 include a transparent conductive polymer material.

In the manufacturing method of the present application, the transparentconductive polymer material includes, but is not limited to,polypyrrole, polyphenylene sulfide, polypeptidylcyanine, andpolyaniline.

A thickness of the transparent trace ranges from 0.2 um to 0.4 um.

Furthermore, the thickness of the transparent trace is 0.3 um.

In the manufacturing method of the present application, the preparationmethod of the transparent traces 500 includes following steps.

Step S101, which includes a procedure of dissolving the transparentconductive polymer material in an organic solvent to form a transparenttrace material.

In the manufacturing method of the present application, the organicsolvent includes dimethylformamide and/or dimethylsulfoxide.

Step S102, which includes a procedure of preparing the transparent tracematerial on the first substrate 100 corresponding to the non-displayregion 1000.

In the manufacturing method of the present application, a thickness ofthe transparent trace material prepared on the first substrate 100ranges from 0.4 um to 0.6 um.

Furthermore, the thickness of the transparent trace material prepared onthe first substrate 100 is 0.5 um.

In the manufacturing method of the present application, the transparentmaterial can be prepared on the first substrate 100 by spraying,printing, and spin coating, which can effectively save processing steps,and is not limited thereto.

Step S103, which includes a procedure of placing the first substrate 100in a baking furnace, and drying the transparent trace material.

In the manufacturing method of the present application, temperature inthe baking of the first substrate 100 ranges from 100° C. to 120° C.,and baking time ranges from 30 min to 40 min.

Furthermore, the baking temperature is 110° C., and the baking time is35 min.

Step S20, which includes a procedure of preparing a sealant materiallayer in the non-display region 1000 of the first substrate 100, anddisposing the sealant material layer on the transparent traces.

Step S30, which includes a procedure of aligning a second substrate 200with the first substrate 100, and injecting liquid crystals 300 betweenthe first substrate 100 and the second substrate 200 using a liquidcrystal injection process.

Step S40, which includes a procedure of bonding the first substrate 100and the second substrate 200 through the sealant material layer.

Step S50, which includes a procedure of irradiating the sealant materiallayer by ultraviolet light from a side of the first substrate 100 tocure the sealant material layer to obtain a sealant 400.

In summary, the present application provides a liquid crystal displaypanel and a method of manufacturing the same. The liquid crystal displaypanel includes a first substrate, a second substrate, a liquid crystallayer, and a sealant. The liquid crystal display panel includes adisplay region and a non-display region surrounding the display region.The first substrate and the second substrate are bonded by the sealantsurrounding the display region, and the liquid crystal layer is disposedin a range limited by the sealant. The first substrate includes aplurality of signal lines corresponding to the display region and aplurality of transparent traces corresponding to the non-display region,the transparent traces include a transparent conductive polymermaterial, and the sealant is disposed on the transparent traces. Asignal is transmitted between a circuit board and the signal linesthrough the transparent traces.

In the present application, the transparent traces are prepared on thefirst substrate to replace the metal traces originally under thesealant, and material of the transparent traces includes transparentconductive polymer. The transparent conductive polymer has advantages ofhigh strength, high modulus, corrosion resistance, low water absorption,and the like, so that ultraviolet light is irradiated on the sealantfrom a side of the transparent traces in a process of curing thesealant, which can effectively improve the curing rate of the sealant.Moreover, the conductive polymer has better corrosion resistance thanmetal, which can effectively prevent circuit corrosion caused by thesealant absorbing water. At the same time, the transparent material canbe formed into a film by spraying, printing, spin coating, etc., whichcan effectively save the process steps.

Embodiments of the present invention have been described, but notintended to impose any unduly constraint to the appended claims. For aperson skilled in the art, any modification of equivalent structure orequivalent process made according to the disclosure and drawings of thepresent invention, or any application thereof, directly or indirectly,to other related fields of technique, is considered encompassed in thescope of protection defined by the claims of the present invention.

What is claimed is:
 1. A liquid crystal display panel, comprising: a first substrate, a second substrate, a liquid crystal layer, and a sealant; and the liquid crystal display panel further comprising a display region and a non-display region surrounding the display region; wherein the first substrate and the second substrate are bonded by the sealant surrounding the display region, and the liquid crystal layer is disposed in a range limited by the sealant; wherein the first substrate comprises a plurality of signal lines corresponding to the display region and a plurality of transparent traces corresponding to the non-display region, and the transparent traces comprise a transparent conductive polymer material; wherein the sealant is disposed on the transparent traces; wherein a signal is transmitted between a circuit board and the signal lines through the transparent traces; and wherein the first substrate corresponding to the non-display region further comprises at least one metal trace, and the at least one metal trace is disposed on a same layer as the transparent traces, wherein the signal is transmitted between the circuit board and the signal lines through the transparent traces and the at least one metal trace.
 2. The liquid crystal display panel according to claim 1, wherein the transparent conductive polymer material comprises at least one of polypyrrole, polyphenylene sulfide, polypeptidylcyanine, or polyaniline.
 3. The liquid crystal display panel according to claim 1, wherein material for preparing the transparent traces further comprises an organic solvent, and the organic solvent comprises dimethylformamide and/or dimethylsulfoxide.
 4. The liquid crystal display panel according to claim 1, wherein a thickness of each of the transparent traces ranges from 0.2 um to 0.4 um.
 5. The liquid crystal display panel according to claim 1, wherein a part of the transparent traces is sandwiched between the sealant and the first substrate, and the other part of transparent traces is positioned between the display region and a region of the sealant corresponding to the first substrate.
 6. The liquid crystal display panel according to claim 1, wherein a projection of the transparent traces on the first substrate is positioned within a projection of the sealant on the first substrate, and a projection of the at least one metal trace on the first substrate is positioned outside the projection of the sealant on the first substrate and is close to a side of the display region.
 7. The liquid crystal display panel according to claim 1, wherein the transparent traces and the at least one metal trace are arranged at equal intervals.
 8. A liquid crystal display panel, comprising: a first substrate, a second substrate, a liquid crystal layer, and a sealant; and the liquid crystal display panel further comprising a display region and a non-display region surrounding the display region; wherein the first substrate and the second substrate are bonded by the sealant surrounding the display region, and the liquid crystal layer is disposed in a range limited by the sealant; wherein the first substrate comprises a plurality of signal lines corresponding to the display region and a plurality of transparent traces corresponding to the non-display region, and the transparent traces comprise a transparent conductive polymer material; wherein the sealant is disposed on the transparent traces; wherein the transparent conductive polymer material comprises at least one of polypyrrole, polyphenylene sulfide, polypeptidylcyanine, or polyaniline; wherein a signal is transmitted between a circuit board and the signal lines through the transparent traces; and wherein the first substrate corresponding to the non-display region further comprises at least one metal trace, and the at least one metal trace is disposed on a same layer as the transparent traces, wherein the signal is transmitted between the circuit board and the signal lines through the transparent traces and the at least one metal trace.
 9. The liquid crystal display panel according to claim 8, wherein material for preparing the transparent traces further comprises an organic solvent, and the organic solvent comprises dimethylformamide and/or dimethylsulfoxide.
 10. The liquid crystal display panel according to claim 8, wherein a thickness of each of the transparent traces ranges from 0.2 um to 0.4 um.
 11. The liquid crystal display panel according to claim 8, wherein a part of the transparent traces is sandwiched between the sealant and the first substrate, and the other part of transparent traces is positioned between the display region and a region of the sealant corresponding to the first substrate.
 12. The liquid crystal display panel according to claim 8, wherein a projection of the transparent traces on the first substrate is positioned within a projection of the sealant on the first substrate, and a projection of the at least one metal trace on the first substrate is positioned outside the projection of the sealant on the first substrate and is close to a side of the display region.
 13. The liquid crystal display panel according to claim 8, wherein the transparent traces and the at least one metal trace are arranged at equal intervals. 